Lexus GS 450h
With a five vehicle hybrid line-up, Lexus reinforces its commitment to hybrid technology with the all-new 2013 GS 450h.
The hybrid version of the 2013 GS 350 incorporates improvements to its hybrid powertrain and is equipped with a second generation Lexus Hybrid Drive system. GS 450h engineers have aimed for reductions in fuel consumption and emissions, while providing exhilarating performance.
With a total system power output of 338 hp, the GS 450h will accelerate effortlessly from 0-60 mph in 5.6 seconds. Conversely, fuel consumption is expected to be improved by more than 30 percent. The GS 450h is targeting certification as a Super-Ultra Low Emissions Vehicle II (SULEV II). The new GS hybrid also features a Drive Mode selector. In addition to the Normal mode, the driver can customize the driving experience using Eco, Sport S, Sport S+ and EV modes.
“The all-new GS 450h will provide our customers with an exciting blend of performance and precision in a new hybrid package,” said Mark Templin, Lexus group vice president and general manager in the U.S. “With its dynamic exterior styling, roomy interior and advanced technology features, the GS 450h further demonstrates Lexus’ mastery of the luxury hybrid.”
As with all Lexus hybrid vehicles, the new GS 450h is a full hybrid capable of operating in gas-only or electric-only modes, as well as a combination of both. Its Lexus Hybrid Drive system features an ultra-smooth running, Atkinson cycle 3.5-liter V6 engine mated to a compact, high-output, water-cooled permanent magnet electric motor. The two powerplants drive the rear wheels both independently and in tandem, as needed.
In addition to the gas engine and electric motor, the new GS 450h’s hybrid drive system a generator; a high-performance nickel-metal hydride battery; a power split device which, via planetary reduction gears, combines and re-allocates power from the engine, electric motor and generator according to operational requirements; and a compact power control unit to govern the high speed interaction of the system components.
Adapted specifically for the hybrid powertrain and a first for premium performance sedans, the 3.5-liter V6, DOHC engine benefits from several technical improvements including the adoption of the Atkinson Cycle engine design to optimize the fuel-efficient benefits of Lexus Hybrid Drive.
All second-generation GS hybrid models have a new platform that is designed to be more rigid compared to the previous models. Engineers conducted extensive platform testing, ultimately increasing the number of spot welds and adding laser welds in very specific locations. The track works in combination with a revised suspension design to assure a more solid stance and superior cornering performance.
The new suspension system is designed to help guide the 2013 GS through corners with precision. In the front, upper and lower control arms are made from aluminum and employ larger bushings. The rear subframe has been completely redesigned to accommodate an all-new multi-link rear suspension, using improved suspension geometry that retains tire cornering force and enhances rear control. With the stiffer platform and lighter components, the shocks can use lighter-viscosity oil, so they move easily and respond to small inputs more quickly.
The 2013 GS expresses a new generation of Lexus’ design philosophy with its precisely sculpted exterior and will lead the rest of the lineup in an entirely new direction. When designers shaped the GS they visualized the flow of air around it and, like the LFA supercar, maximized aerodynamic efficiency.
Exclusive to the hybrid model is a unique three-lamp design that aligns the turn signal and Lexus-first high and low beam LED lamps in a single horizontal row. The improved illumination and beam range provided by LED lamps offers better visibility even under low beam driving conditions. In addition, the rear bumper of the GS 450h covers the exhaust pipe apertures. The GS 450h can also be distinguished by Lexus’ signature blue hybrid badging.
The GS fuses distinctive style with engineering functionality. Fins incorporated into the side of the tail lamps and the design of the trunk area all help direct air over and past the car. The rear bumper underbody area was designed for reduced wind resistance to help keep the car steady. Finally, air inlets located on the outer edges of the lower grille serve as cooling ducts.
The GS 450h will share the same luxurious and technological amenities as its gas counterpart, including next generation Remote Touch; analog clock with LED indicators, carved from an ingot; and a new energy-saving auto climate control system called S-Flow that focuses airflow only to the front area where passengers are actually seated. A few notable differences include a bamboo-finished steering wheel which reinforces the sustainability of the GS 450h, and the hybrid monitor.
Source: Lexus press